Blade-fastening.



PATENTED DEC. 31, 1907.

N. G. BASSETT. BLADE FASTENING. APPLIOATION'IILED DOT. 2a, 1906. EENZBWED MAY 27, 1907.

MNVENTOR B Y W' ATTORNEY.

69M M (WM- WITNESSES} a) To allv it may concern:

' UNITED STATES PATENT OFFICE.

or MILWAUKEE,

\VISCONSIN, A CORPORATION OF NEW JERSEY.

BLADE-FAs'rnNIfiG.

.Be it known that I, Non-MAN C. Bassn'r'r, av citizen of the United States, residing at State of Wisco new and. f l

tion. Y 1

"This invention relates to fastening devices suitable for fastening the blades of fluid propelled engines, or'the blades of fans or pumps 1 orpropelliug fluid, and generally it relates toa fastening'means which is capable of being used in any relation where it is desirable sin, have I invented certain provements in Blade---Fashr 11 the following is a specificatolfirmly secure to a member a plurality of similarly associated elements.

1 term 1- blade as'used in this specifica- "tion and he claims is used in the generic,

sense to include any equivalent elements which it might be desirable to secure to a member in' a similar manner and is not intended to restrict this invention to any specific art or machine, the term blade being ,used for convenience as this invention is particularly well suited for use in the construction of. steam turbines.

The urpose of this invention is to provide a simp e, safe and convenient means for the purpose described, the parts composing the structure ofwhich are easily manufactured and such that the blades may be readily assembled and secured in theblade-carrying -meinber with the greatest possible despatch. On the drawings which accompany this specification and orm a part thereof and on .which the same reference characters are used to" designate the same elements wherever they ap ear in eachof the several views, and wh ch u strate embodiments of this in- 40 vellu Figure 1 represents a plan view of a frag-- ment of a blad'e carrying member with the blades secured therein, the blades being shown in section. Fig. 2 is a sectional eleva- (5. tion of the parts as shown inFig. 1. Fig. 3 i [a sectional elevation of a detail taken parllel to the eneral direction of the bladeolding m'emj er. Fig. 4 is a plan of a fragment of a blade-carrying me nber'with the blades' secured thereto, the blades being shown in section, showing an alternative construction. Fig. 5 is a sectional elevation of the arts as shown by Fig. 4.

y drawings the numeral 1 indicates a B blade carrying member provided with a re- Spe'cification of Letters Patent.

Milwaukee, in the county, of Milwaukee and member.

.ing

Patented Dec. 31, 1907.

Application filed October 29. 1906. Serial No. 341.076. Renewed May 27. 1,907. semi No. 875.955.

carrying member 1 and said blade-holding member is notched on the side opposite to said projection 6, the notches being approximately triangular shaped, as seen in the lan views, and said blade-holding member is rther provided with .recesses 7 ada ted to be engaged by rejections 8 on the-b ades 9 to lock said b ades to said blade-holding In order to securely fasten the blade-holdmember 5 and the blades assembled therewith in the recess of the blade-carrying member 1, a lurality' of relativel thin strips are provi ed which are adapte to be seated in said recess, entering the recessed portion 4 thereof and bearin at their opposite edges preferably against t e blades alone, as shown by 'the drawings. These stri s when assembled form what may properly called laminated filling blocks and may take in actual construction several forms, two of which are illustrated by the drawings.

1 In Fi s. l and 2 are shown laminated filling bloc plates and in this construction, which is the referred construction, each of'these plates is a duplicate of each of theothers.

numer l0, ma be readily cut or stamped.

from material 0 the proper thickness, being cut so as to conform to the shape of the space they are required to occupy, and when the blades 9 are assembled with the bladesholde ing member 5 within the recess 2 of the blade carrying member 1 they are inserted in position, one at a time, and preferably forced into place, being of such a size preferably as to fill the space they occupy'tightly insteadof. loosely. After the requisite number of plates have been inserted to form a filling lock 11, which fills the recess 4 as. shown, the adjacent corner of the blade-holdin member 5 may be unched over, as indicate at 12, to positive y lock said plates within said recess. v

In Fig. 4 is shown a modification in the shape of the plates and the method of placing theindividual plates, .which are desigs composed of series of superposed thereby iloldiizg the blades Iiatcd. by the numeral 13, are of difl'emnt slzcs, cum'mriug the :nn'uber necessary. to

constitute a, filling block (or each blade, but the corresponding plates as used with each of the several blades arc duplicates each of the other. in this case the "first plat-to of a series, which designated by the numeral '14, is seated in the recess with one edge in contact with a blade 9, mad as in this purliculm" sti'ucturc shown, the vdgelS ol' the notch lf'i in the blade-holding member is disposed at a slight angle with respect to the en ss scct'ivn ol the recess in the blade-carrying member, the gilatclr is then bent forcibly iii-011ml the free edge of the cd uccnt' blade J until it lies at right angles to tl h" general longitudinal di naction of the recess 2, in which pr-sitilal its blades the last half of the number cl blades are not bent as are the l"o1}l' (r.

The plates shown by Figs. 1, 2 and Stare not necessarily lin'iited in size. to provide a. fiiling block fol-each separate blade, but they ,mzxy be so formed that they serve to l'orm The filling blocks for 22- :lumlity of blades. i'orm shown by can bgyrcs is, however, the

preferred form its each plate is riuiu'ily uss -mbled with the other nirts, and, its ezu-b plate is a duplicate ofeucli olithe ,utliem, no judgment nor selection'is required to bc exercised b the workmen, and, besides, the filling b oclts can be Formed readily and rcom miw elly.

With the form of filling blocks as shown by Figs. 4 and 5, judgment and sclei'r-tion must be exercised by the workmen in assembling the ports in their proper relation, mid on ac count of this and the fact that it is preferrml to bend slightly some of. the plates as shown, these structures are not as readily assembicd as the structures of the preferred form. As each of these plates in the alternative construction as used with the different blades is a duplicate of the plates used with each. ol the other blades, the duplicate plates are of course kept together and the workmen who assembles the labels may be provided with receptacles cool? of which contains a separate size of plates, and by starting with thoreceptccle containing-the larger, arfll coutinuin with the next smaller until the filling-bloc is completed, the act of selection becomes mechanical rather than mental, which facilitates the operation of assembling the plates.

in each of the structures illustrsitegl 316 plates bear upon the pro ect' 11s on t is v a e 0 I rimly 'aiii ct tl 111 the recess 2, the plates 13 beingcut awayicr recessed, as shown M3130, so that they bear against the bottom of the recess 2 also,

What I claim. is,

I. Tbefcombination with ii blade-carrying member, provided with a recess, of a bladebolding member, provided with notches, seated in said rcccss,.bludes seated in the notches of said blade-holding member, and a lzuninutcd filling block to secure a, blade and said blade-holding member within the recess of said blade-carrying member.

2. The combination with a, blademarrymg member, provided with a recess, of a bladeholding member, provided with notches, seated in smd recess, bludcs seated in the notches of Stud blade-holding member, and a plurality of HL'ITllIllLtOd filling blocks to secure the blades and said blade-holding member recess of sa d blade-carryingnotches of said blade-holding member, and.

laminated filling blocks to secure said blcdes and blcdc holding member Within the recess of said blodo carrying member.

4,. The combination with a blade-carrying member, provided with a; recess a side of which is undercut, of 'c blade-holding mom recess, said blade-holding member being also pruvided'with a )rojcction adapted to en gage with said sidcof the recess within the undercut portion thereof, said bladc-holdin member being recessed adjacent to sci notches, blades, provided with projections, seated in said notches with their projections engaged with the bladeholding member in the recessed portions thereof, and laminated filling blocks to secure said blades sud bladeholding member within the recess of said blade-carrying member. 7 Y Y 5. The'combinction with a bladc-carryin member, provided with a recess the sidcso wliicbiirc undercut, of a, blade-holding memoer provided. with notches, seated Lil said recess, said blade-holding member bcingalso provided with a projection ado ted to enagewith a side of the recess wit, in the un- '10 o 'bcr, provided with notches, seated in said i -Iricmber being recessed adjacent to sai notches, blades, provided with projections", seated in said notches with their projections cngaged'with the blade-holding member in the recessed ortioiis thereof, and filling blocks, each 0? which is composed of a. plurality of plates, on agedbo'th with the blades and projections t ereon and with at side of the ,rccess in saidf blade-cam'ying. incri ber correctionjjti;

within the undercut portion thereof to secure said blades and blade-holding member within 'the recess of said blade-carryin member.

6. The combination with a b ade-carryin member, provided with a recess the sides 0 which are undercut, of a blade-holding member provided with notches, seated 111 said recess, said blade-holding member being also provided with a projection adapted to engage with a side of the recess within the undercut rtion thereof, said blade-holding member eing recessed adjacent to said notches, blades, provided with projections, seated in said notches with their projections engaged with the blade-holding member in the re.-

cessed portions thereof, and filling blocks,

.7 each of which is composed of a plurality of plates, one of which plates is enga ed both with the projection on a blade an with a '20 side of the recessin said blade-carrying mem bar with the undercut portion thereof while the other plates composing a filling block engage with the blade and with the said side of the recess, to secure said blades and bladeholding member within the recess of said bladewarryin member.

'7. The com ination with a blade-carryin cess, said blade-holding member being also provided with a projection adapted to engage with a side of the recess within the undercut portion thereof, said blade-holding member being recessed adjacent to said notches, blades, provided with projections, seated in said notches with their projections engaged with the blade-holding member in the re' cessed portions thereof, and filling blocks, each of which is composed of a plurality of plates, one of which plates is enga ed both with the projection on a blade an with a side of the recess in said bladecarryi ng member within the undercut portion thereof while the other plates-com esing the filling block engage with the bl e and with the said side of the recess, a porti'oh of the bladeholding'member beingprojected over" the outermost plate of .the series composing a filling block,

8. The combination with a blade-ca ing member, provided with a recess, ofa b ade seated in said recess, and a laminated filling block to secure said blade therein.

In testimony whereof, I affix my signature in the presence of two witnesses.

' NORMAN C. BASSETT.

.Witnesses: FRANK E. DENNETT, I JOHN OLSEN.

It is hereby certified that in Letters Patent No 875,646, granted December 31, 190 upon the application of Norman C. Bassett, of Milwaukee, Wisconsin, for an improveluent in fBlade-Fastenings,f an error appears in the printed specification requiring correction, as follows: In line 21, page 3 the word with should read within; and that the'said Letters Patent should be read with this correction therein that the same 5 :1 may conform to the record of the case inthe Patent Office. i

' Signed and sealed this 21st day of January, D., 1908. I

v C. C. BILLINGS, Acting Commissioner of Patents.

correctionjjti;

within the undercut portion thereof to secure said blades and blade-holding member within 'the recess of said blade-carryin member.

6. The combination with a b ade-carryin member, provided with a recess the sides 0 which are undercut, of a blade-holding member provided with notches, seated 111 said recess, said blade-holding member being also provided with a projection adapted to engage with a side of the recess within the undercut rtion thereof, said blade-holding member eing recessed adjacent to said notches, blades, provided with projections, seated in said notches with their projections engaged with the blade-holding member in the re.-

cessed portions thereof, and filling blocks,

.7 each of which is composed of a plurality of plates, one of which plates is enga ed both with the projection on a blade an with a '20 side of the recessin said blade-carrying mem bar with the undercut portion thereof while the other plates composing a filling block engage with the blade and with the said side of the recess, to secure said blades and bladeholding member within the recess of said bladewarryin member.

'7. The com ination with a blade-carryin cess, said blade-holding member being also provided with a projection adapted to engage with a side of the recess within the undercut portion thereof, said blade-holding member being recessed adjacent to said notches, blades, provided with projections, seated in said notches with their projections engaged with the blade-holding member in the re' cessed portions thereof, and filling blocks, each of which is composed of a plurality of plates, one of which plates is enga ed both with the projection on a blade an with a side of the recess in said bladecarryi ng member within the undercut portion thereof while the other plates-com esing the filling block engage with the bl e and with the said side of the recess, a porti'oh of the bladeholding'member beingprojected over" the outermost plate of .the series composing a filling block,

8. The combination with a blade-ca ing member, provided with a recess, ofa b ade seated in said recess, and a laminated filling block to secure said blade therein.

In testimony whereof, I affix my signature in the presence of two witnesses.

' NORMAN C. BASSETT.

.Witnesses: FRANK E. DENNETT, I JOHN OLSEN.

It is hereby certified that in Letters Patent No 875,646, granted December 31, 190 upon the application of Norman C. Bassett, of Milwaukee, Wisconsin, for an improveluent in fBlade-Fastenings,f an error appears in the printed specification requiring correction, as follows: In line 21, page 3 the word with should read within; and that the'said Letters Patent should be read with this correction therein that the same 5 :1 may conform to the record of the case inthe Patent Office. i

' Signed and sealed this 21st day of January, D., 1908. I

v C. C. BILLINGS, Acting Commissioner of Patents.

Correction in tettr fi f itent N9; 8 75cfififi- It is hereby certified that in Letters Petent Ne. 875,646, granted December 31, 1907, upon the application of Norman C. Baesett, of Milwaukee, Wisconsin, for an improvement in Blade-Fastenings, an error appears in the printed specification requiring l correction, as follewsz In line 21, page 3, the word with should read within; and that the said Letters Patent should he read with this eorrection therein that the same may eonforln to the record of the case in the Patent Oflice.

Signed and sealed this 21st day of January, A. D., 1908.

[SEAL] c. 0. BILLINGS,

Acting Commissioner of Patents. 

